Vacuum-cleaner.



A. J. FISHER.

VACUUM CLEANER.

APPLIcAloN FILED 001.23. 191e.

' Patented Dec. 3, 1918.

entran srarns represa ernten,

ALVA J'. FISI-IER, 0F EVANSTON, ILLINOIS, ASSIGNOR '.IO HURLEY MACHINE COMPANY,

OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS. i

VACUUM-CLEANER.

Speccaton of Letters Patent.

Application led October 23, 1916; Serial No. 127,247.

To all whom 'it may concern Be it known that I, ALVA (I. FISHER, a citizen of the United States, residing at Evanston, in the county of Cool: and vState of Illinois, have invented certain new and useful Improvements in Vacuu1n-Cleaners, of which the following is a specification.

My invention relates to vacuum cleaners and the object thereof is to provide a simple and efficient buffer device for the front end thereof, particularlythe nozzle casing of the cleaner, which is ofthe suction fan type.

In the drawing Figure l is a front elevation of my vacuum cleaner, with the buffer device thereon; Fig. 2 a side elevation thereof; and Fig. 3 a sectional detail on the line 3--3 of Fig. '1.'

As the invention pertains'merely to the nozzle casing and the buffer thereon, the con` struction of the cleaner need not be de scribed, excepting to say that the fan is contained within the casing 1 and draws'the air up through the interior of the nozzle casing 2, and discharges it at the outlet 3. The lower horizontal edges of this nozzle casing are turned outwardly and rolled over into the form of tubes, the forward one of which, indicated at 2, is utilized as a support or bearing for the shaft 4 of the small rollers 5 at the opposite ends thereof, such shaft being offset at 4 on the inner sides of these rollers.

The butter device consists of a strip 6 of resilient material, such as rubber, and pref-i erably rectangular 1n cross-section, as shown' inFig. 3. This strip is held projected forwardly from the front side of the nozzle easing at a point between the rollers 5 and extending in a plane beyond the latter. As-

shown in detail in Fig. 3, this flexible strip is held in place by means of another strip 7, preferably of metal and U-Shaped in' cross section to form a channeled retainer. This Patented Dec.. 3, 1918. -f

metallic retainer strip rests upon the top edge I i of the tube 2 substantially on the plane of the roller axes and is welded thereto and to the nozzle casing as indicated at 8. This tube therefore forms a support not only for the' shaft l but also a base for this metallic strip 7. The flexible strip is 'received Within the metallic strip and in order to hold the same therein the outer edges of the metallic strip are restricted or inturned slightly so Aas to grip or compress the strip 6 to thereby hold it in place for all practical purposes, but without preventing its removal by positive force whenever desired, so that such strip can beremoved or 'renewed when desired.

I claim: 'L In a vacuum cleaner the vcombination of a suction nozzle 'easing having its lower edge curled into a tube projecting beyond the adjacent lower portion of the front Wall f of the nozzle, ashaft mounted in said tube and having rollers mounted thereon; a channeled front-opening retainer mounted to bear -downwardly on Asaid tube and rearwardly against the front wall of thenozzle,

and a flexible bulfer'strip supported by said retainer. and projecting forward' beyond the nozzle structure and the rollers.

2. In a vacuum cleaner the combination of end of said shaft, a U-shaped front-opening retainer-strip resting on the-tube and bearing at its rear, closed edge againstthe front wall of the nozzle above the ,tube and securedy rigidly to both thereof throughout its length,

and a buffer strip carried by the retainer i strip projecting from the front thereof to a line 1n advance of the rollers.

ALI/'A J. FISHER. 

